Mercurial > hg > graal-jvmci-8
diff src/share/vm/c1/c1_LIRGenerator.cpp @ 23614:32b682649973 jdk8u75-b04
8132051: Better byte behavior
Reviewed-by: coleenp, roland
author | kevinw |
---|---|
date | Fri, 15 Jan 2016 22:33:15 +0000 |
parents | 8fd636dd1c91 |
children | b5f3a471e646 d109bda16490 |
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--- a/src/share/vm/c1/c1_LIRGenerator.cpp Mon Jan 11 13:41:45 2016 -0800 +++ b/src/share/vm/c1/c1_LIRGenerator.cpp Fri Jan 15 22:33:15 2016 +0000 @@ -1,5 +1,5 @@ /* - * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it @@ -3646,3 +3646,26 @@ } } } + +LIR_Opr LIRGenerator::maybe_mask_boolean(StoreIndexed* x, LIR_Opr array, LIR_Opr value, CodeEmitInfo*& null_check_info) { + if (x->check_boolean()) { + LIR_Opr value_fixed = rlock_byte(T_BYTE); + if (TwoOperandLIRForm) { + __ move(value, value_fixed); + __ logical_and(value_fixed, LIR_OprFact::intConst(1), value_fixed); + } else { + __ logical_and(value, LIR_OprFact::intConst(1), value_fixed); + } + LIR_Opr klass = new_register(T_METADATA); + __ move(new LIR_Address(array, oopDesc::klass_offset_in_bytes(), T_ADDRESS), klass, null_check_info); + null_check_info = NULL; + LIR_Opr layout = new_register(T_INT); + __ move(new LIR_Address(klass, in_bytes(Klass::layout_helper_offset()), T_INT), layout); + int diffbit = Klass::layout_helper_boolean_diffbit(); + __ logical_and(layout, LIR_OprFact::intConst(diffbit), layout); + __ cmp(lir_cond_notEqual, layout, LIR_OprFact::intConst(0)); + __ cmove(lir_cond_notEqual, value_fixed, value, value_fixed, T_BYTE); + value = value_fixed; + } + return value; +}